Anytime, glad to help out.

If you're comfortable working with wiring and soldering, the options with the PC server supplies will cost less. Some like a 'finished' type power supply like those linked above.

I've been using a IBM PC server supply - it required soldering wires in the right slots on teh supply and connection for the charger, but for less than $50, 12.2v and 42amps has charged anything I've needed to.